Fix: Add missing ServerboundAttackPacket to PacketUtils

[Haykkonen]

Description

Added ServerboundAttackPacket to PacketUtils maps (C2S_PACKETS and C2S_PACKETS_R).

Since Mojang split the old interact packet into interaction and attack in recent versions, ServerboundAttackPacket was completely missing from the internal PacketUtils list. This caused issues where users couldn't select or filter this packet in the UI (e.g., inside the PacketListSetting used by modules like PacketDelay or PacketCancel), making it impossible to cancel or delay attacks via the GUI.

Guidelines

• The license header is preserved.
• No IDE/system-related files are included.
• Code style matches the existing project structure.

[Copilot]

Pull request overview

This PR fixes a missing client-to-server packet registration in PacketUtils, ensuring ServerboundAttackPacket is available wherever the client uses PacketUtils’ name↔class maps (e.g., packet filtering/selection UIs such as PacketListSetting).

Changes:

• Add ServerboundAttackPacket to the C2S_PACKETS map (class → display name).
• Add ServerboundAttackPacket to the C2S_PACKETS_R map (display name → class).

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[crosby-moe]

was the copilot overview really necessary

[necessaryafter]

lgtm

[Haykkonen]

was the copilot overview really necessary

@crosby-moe i didn't trigger it manually haha. it's actually an automatic feature that triggers by default on my prs since i use github pro / copilot.